Marine universal coupling with embedded torque sensor

Abstract

The invention provides a marine universal coupling with an embedded torque sensor. The universal coupling comprises cross fork head assemblies at the two ends, an axial displacement compensation mechanism and a torque sensor containing part. The axial displacement compensation mechanism is arranged between the cross fork head assemblies at the two ends. And the torque sensor part is connected between the axial displacement compensation mechanism and the cross fork head assembly. The integrated universal coupling is provided through length compensation and an internal sensor, and the technical problem that a universal coupling structure which is simple in structure and more suitable for test application is lacked in the prior art is solved.

Description

Technical field:

[0001] The invention relates to the technical field of coupling structures, in particular to a marine universal coupling with an embedded torque sensor. Background technology:

[0002] The marine universal coupling is an important component of the ship's angle transmission system. It is used to transmit the torque and speed of the main engine, realize shaft angle compensation and axial large displacement compensation, so as to meet the shaft angle transmission requirements of the ship's propulsion system and the vibration reduction and impact resistance displacement compensation requirements.

[0003] As one of the core components of the ship's angle transmission system, it is particularly important to ensure the safe and reliable operation of the universal coupling. With the gradual application of high-power marine diesel engines and the diversification of the high- and low-speed end arrangements of the universal coupling, the torque it carries is also increasing.

[0004] Therefore, it is urgent to monitor the working status of the marine universal coupling to prevent the universal coupling from breaking due to excessive torque, and to provide more realistic test data for the development of ship propulsion systems. At present, the shaft-holding torque sensor has the disadvantages of large size, cumbersome installation, and poor environmental adaptability. Therefore, the torque sensor can be directly embedded in a long universal coupling structure, and the working status of the universal coupling can be monitored in real time with the monitoring system.

[0005] Therefore, there is an urgent need for a marine universal coupling with an embedded torque sensor, which is helpful to solve the technical problem that the prior art lacks a universal coupling structure with a simple structure and is more suitable for test applications. Summary of the invention:

[0006] In one embodiment, the present invention provides a marine universal coupling with an embedded torque sensor, which provides an integrated universal coupling through length compensation and internal sensors, helping to solve the technical problem in the prior art of lacking a universal coupling structure with a simple structure that is more suitable for test applications.

[0007] The universal coupling includes a cross fork assembly at both ends, an axial displacement compensation mechanism, and a torque sensor portion;

[0008] The axial displacement compensation mechanism is arranged between the cross fork components at both ends;

[0009] The torque sensor-containing portion is connected between the axial displacement compensation mechanism and the cross fork assembly.

[0010] In one embodiment, the cross fork assembly includes an outer flange fork, a cross bearing assembly, and an inner flange fork;

[0011] One end of the cross bearing assembly is connected to the outer flange fork;

[0012] The inner flange fork is connected to the other end of the cross bearing assembly.

[0013] In one embodiment, the axial displacement compensation mechanism includes a torque transmission bearing assembly, an intermediate slide groove, a sliding sleeve assembly, a sealing sleeve assembly and a shaft;

[0014] The sliding sleeve assembly is fixed to the middle sliding groove;

[0015] One end of the shaft is a flange structure, and the other end of the shaft is sleeved in the torque transmission bearing assembly. The middle slide groove is a sleeve structure, and the middle slide groove is sleeved on the other end of the shaft and can move axially. The sliding sleeve assembly is sleeved on the shaft.

[0016] In one embodiment, the torque transmission bearing assembly is interference fit with the shaft.

[0017] In one embodiment, the torque sensor-containing portion includes a bow flange, a solid optical shaft, an embedded torque sensor, and a stern flange;

[0018] One end of the solid optical axis is the bow flange;

[0019] One end of the embedded torque sensor is connected to the other end of the solid optical axis;

[0020] The stern flange is connected to the other end of the embedded torque sensor.

[0021] In one embodiment, the middle slide groove is fixedly connected to the bow inner flange fork by bolts.

[0022] In one embodiment, the sliding sleeve assembly is fixedly connected to the middle sliding groove by bolts, and the inner ring of the sliding sleeve assembly slides relative to the shaft surface.

[0023] In one embodiment, the inner ring of the sealing sleeve assembly slides relatively with the outer surface of the sliding sleeve assembly, and the rear end of the sliding sleeve assembly is welded and fixed to the shaft flange.

[0024] In one embodiment, the flange of the shaft is fixedly connected to the stern flange by bolts, and the torque sensor-containing portion is fixedly connected to the fork of the inner flange of the bow end by bolts.

[0025] In one embodiment, the universal coupling further comprises a wireless signal acquisition box;

[0026] The embedded torque sensor includes a wireless signal transmitting module, which collects and processes the torque signal through a receiving and processing module in a wireless signal acquisition box, and then connects the torque signal to the monitoring system through a wired cable via a transmission interface. Description of the drawings:

[0027] Figure 1 This is a schematic structural diagram of a marine universal coupling with an embedded torque sensor in one embodiment of the present invention;

[0028] Figure 2 This is a schematic structural diagram of a cross fork assembly in another embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of an axial displacement compensation mechanism in another embodiment of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of a torque sensor part in another embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of a wireless signal acquisition box in another embodiment of the present invention.

[0032] Reference numerals:

[0033] Cross fork assembly 1

[0034] External flange fork 11

[0035] Cross bearing assembly 12

[0036] Inner flange fork 13

[0037] Axial displacement compensation mechanism 2

[0038] Torque transmission bearing assembly 21

[0039] Middle chute 22

[0040] Sliding sleeve assembly 23

[0041] Sealing sleeve assembly 24

[0042] Axis 25

[0043] Including torque sensor part 3

[0044] Bow flange 31

[0045] Solid optical axis 32

[0046] Built-in torque sensor 33

[0047] Stern flange 34

[0048] Wireless signal acquisition box 4

[0049] Processing module 41

[0050] Transmission interface 42 Specific embodiment:

[0051] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0053] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0054] It should also be understood that, although the present application has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present application that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0055] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0056] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to determine the true intent based on the user's historical operations and to avoid unnecessary or redundant details that make the present application unclear. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but are merely used as the basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0057] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0058] Figure 1 This is a structural schematic diagram of a marine universal coupling with an embedded torque sensor in one embodiment of the present invention; Figure 2 This is a schematic structural diagram of a cross fork assembly in another embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an axial displacement compensation mechanism in another embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of a torque sensor part in another embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a wireless signal acquisition box in another embodiment of the present invention.

[0059] like Figures 1 to 5As shown, in one embodiment, the present invention provides a marine universal coupling with an embedded torque sensor, the universal coupling comprising a cross fork assembly 1 at both ends, an axial displacement compensation mechanism 2, and a torque sensor portion 3;

[0060] The axial displacement compensation mechanism 2 is arranged between the cross fork components 1 at both ends;

[0061] The torque sensor-containing part 3 is connected between the axial displacement compensation mechanism 2 and the cross fork assembly 1 .

[0062] In this embodiment, a specific structure of a marine universal coupling with an embedded torque sensor is provided, the cross fork assembly 1 at both ends can realize the direction-changing function of the universal coupling, the axial displacement compensation mechanism 2 is used to generate length compensation in the axial direction, and the torque sensor part 3 is used to collect test data, which helps to solve the technical problem of the lack of a universal coupling structure with a simple structure and more suitable for test applications in the prior art. The cross fork assembly 1 is respectively connected to the bow and stern equipment of the shaft system.

[0063] In one embodiment, the cross fork assembly 1 includes an outer flange fork 11, a cross bearing assembly 12, and an inner flange fork 13;

[0064] One end of the cross bearing assembly 12 is connected to the outer flange fork 11;

[0065] The inner flange fork 13 is connected to the other end of the cross bearing assembly 12 .

[0066] In this embodiment, a specific structure of a cross fork assembly 1 is provided, which is used to complete the function and connect with both ends. When the shaft system is running, the outer flange fork 11 rotates around the axis of the universal coupling, and is fixed with the cross bearing assembly 12 in the axial, radial and circumferential directions of the shaft system, but can rotate around one axis of the cross bearing assembly 12 by a certain angle. Similarly, the inner flange fork 13 can rotate around another axis of the cross bearing assembly 12 by a certain angle, and finally the angle compensation function of the universal coupling can be realized to meet the angle transmission requirements of the shaft system.

[0067] In one embodiment, the axial displacement compensation mechanism 2 includes a torque transmission bearing assembly 21, an intermediate slide groove 22, a sliding sleeve assembly 23, a sealing sleeve assembly 24 and a shaft 25;

[0068] The sliding sleeve assembly 23 is fixed to the middle slide groove 22;

[0069] One end of the shaft 25 is a flange structure, and the other end of the shaft 25 is sleeved in the torque transmission bearing assembly 21. The middle slide groove 22 is a sleeve structure. The middle slide groove 22 is sleeved on the other end of the shaft and can move axially. The sliding sleeve assembly 23 is sleeved on the shaft 25, and the head outer ring of the torque transmission bearing assembly 21 rolls axially in the middle slide groove 22.

[0070] When axial displacement occurs at both ends of the bow and stern, the axial displacement compensation mechanism 2 performs compensation adjustment through sliding and rolling motion to meet the axial displacement compensation requirements of the shaft system. Moreover, compared with the spline sliding structure, the rolling structure of the torque transmission bearing makes the universal coupling have extremely low axial reaction force, reducing the power loss of the universal coupling.

[0071] The specific structure of the axial displacement compensation mechanism 2 in this embodiment.

[0072] In one embodiment, the torque transmission bearing assembly 21 and the shaft 25 are interference fit.

[0073] In this embodiment, the torque transmission bearing assembly 21 and the shaft 25 are specifically matched with each other.

[0074] In one embodiment, the torque sensor-containing portion 3 includes a bow flange 31 , a solid optical shaft 32 , an embedded torque sensor 33 , and a stern flange 34 ;

[0075] One end of the solid optical axis 32 is a bow flange 31;

[0076] One end of the embedded torque sensor 33 is connected to the other end of the solid optical axis 32;

[0077] The stern flange 34 is connected to the other end of the embedded torque sensor 33 .

[0078] In this embodiment, a specific structure of a torque sensor portion 3 is provided. The flange shaft 3 containing the torque sensor is processed based on a metal solid shaft, and the electronic components required by the torque sensor are embedded in the optical axis to form an embedded torque sensor 33, which is close to the optical axis in appearance and has no obvious convex and concave structures, thereby avoiding additional vibration caused by imbalance during the operation of the universal coupling.

[0079] In one embodiment, the middle slide groove 22 is fixedly connected to the bow inner flange fork 13 by bolts.

[0080] In this embodiment, a specific connection method between the middle slide groove 22 and the bow inner flange fork 13 is provided.

[0081] In one embodiment, the sliding sleeve assembly 23 is fixedly connected to the middle sliding groove 22 by bolts, and the inner ring of the sliding sleeve assembly 23 slides relative to the surface of the shaft 25 .

[0082] In this embodiment, a specific fixing method of the sliding sleeve assembly 23 and the middle sliding groove 22 is provided.

[0083] In one embodiment, the inner ring of the sealing sleeve assembly 24 slides relative to the outer surface of the sliding sleeve assembly 23 , and the rear end of the sliding sleeve assembly 23 is fixed to the shaft 25 by flange welding.

[0084] In this embodiment, the inner ring of the sealing sleeve assembly 24 and the outer surface of the sliding sleeve assembly 23 are connected in a specific manner in which they slide relative to each other.

[0085] In one embodiment, the flange of the shaft 25 is fixedly connected to the stern flange 34 by bolts, and the torque sensor portion 3 is fixedly connected to the bow inner flange fork 13 by bolts.

[0086] In this embodiment, the flange of the shaft 25 and the stern flange 34, including the torque sensor part 3 and the fore end inner flange yoke 13, are connected.

[0087] In one embodiment, the universal coupling further includes a wireless signal acquisition box 4;

[0088] The embedded torque sensor 33 includes a wireless signal transmitting module, which collects and processes the torque signal through the receiving and processing module 41 in the wireless signal acquisition box 4, and then connects to the monitoring system through the transmission interface 42 via a wired cable.

[0089] The embedded torque sensor 33 includes a wireless signal transmission module, which collects and processes the torque signal through the receiving and processing module 41 in the wireless signal acquisition box 4, and then connects it to the monitoring system through a wired cable through the transmission interface 42, and finally displays the torque of the universal joint in real time in the monitoring system. Embedding the torque sensor makes the appearance more concise on the one hand, avoiding the cumbersome installation process of the shaft-holding type; on the other hand, it can prevent the sensor from directly contacting the salt spray, oil spray and other environments in the cabin, greatly improving the environmental adaptability of the torque sensor.

[0090] Effects of the invention:

[0091] The present invention provides a marine universal coupling with an embedded torque sensor, which can measure the torque carried by the marine universal coupling with an angle transmission system during operation.

[0092] (1) The built-in torque sensor avoids direct contact with the external environment such as oil mist and salt mist in the cabin, and has excellent environmental adaptability.

[0093] (2) Compared with the spline slot sliding structure, the rolling structure of the torque transmission bearing in the axial displacement compensation mechanism has the advantage of extremely low axial reaction force. Combined with the characteristic of the universal coupling that does not transmit bending moment, the torque measurement accuracy is higher, and more accurate feedback is provided for the working status of the angle transmission system, which has guiding significance for the design and optimization of the subsequent transmission system.

[0094] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A marine universal coupling with a built-in torque sensor, characterized in that: The universal coupling comprises: Cross fork components (1) at both ends; An axial displacement compensation mechanism (2) is arranged between the cross fork assemblies (1) at both ends; A torque sensor portion (3) is connected between the axial displacement compensation mechanism (2) and the cross fork assembly (1).

2. The universal coupling according to claim 1, characterized in that: The cross fork assembly (1) comprises: An outer flange fork (11); a cross bearing assembly (12), one end of which is connected to the outer flange fork (11); An inner flange fork (13) is connected to the other end of the cross bearing assembly (12).

3. The universal coupling according to claim 2, characterized in that: The axial displacement compensation mechanism (2) comprises: A torque transmission bearing assembly (21); a middle chute (22); A sliding sleeve assembly (23) fixed to the middle slide groove (22); A sealing sleeve assembly (24); A shaft (25) has one end with a flange structure, and the other end of the shaft (25) is sleeved in the torque transmission bearing assembly (21). The intermediate slide groove (22) is a sleeve structure, and the intermediate slide groove (22) is sleeved on the other end of the shaft and can move in the axial direction. The sliding sleeve assembly (23) is sleeved on the shaft (25).

4. The universal coupling according to claim 3, characterized in that: The torque transmission bearing assembly (21) and the shaft (25) are interference fit.

5. The universal coupling according to claim 4, characterized in that: The torque sensor part (3) comprises: a bow flange (31); a solid optical axis (32), one end of which is the bow flange (31); an embedded torque sensor (33), one end of which is connected to the other end of the solid optical axis (32); A stern flange (34) is connected to the other end of the embedded torque sensor (33).

6. The universal coupling according to claim 5, characterized in that: The middle slide groove (22) is fixedly connected to the bow end inner flange fork (13) by means of bolts.

7. The universal coupling according to claim 6, characterized in that: The sliding sleeve assembly (23) is fixedly connected to the middle sliding groove (22) by means of bolts, and the inner ring of the sliding sleeve assembly (23) slides relative to the surface of the shaft (25).

8. The universal coupling according to claim 7, characterized in that: The inner ring of the sealing sleeve assembly (24) slides relative to the outer surface of the sliding sleeve assembly (23), and the rear end of the sliding sleeve assembly (23) is fixed to the shaft (25) by flange welding.

9. The universal coupling according to claim 8, characterized in that: The flange of the shaft (25) is fixedly connected to the stern flange (34) by means of bolts, and the torque sensor portion (3) is fixedly connected to the fork head (13) of the inner flange of the bow end by means of bolts.

10. The universal coupling according to claim 9, characterized in that: The universal coupling also includes: A wireless signal acquisition box (4), wherein the embedded torque sensor (33) comprises a wireless signal transmission module, and the torque signal is collected and processed by a receiving and processing module (41) in the wireless signal acquisition box (4), and then connected to a monitoring system via a transmission interface (42) through a wired cable.

Images